/[drupal]/contributions/modules/drawing/drawing.module
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revision 1.25.4.2, Tue Apr 7 01:43:19 2009 UTC revision 1.25.4.3, Fri Apr 24 09:13:01 2009 UTC
# Line 20  function drawing_theme() { Line 20  function drawing_theme() {
20    );    );
21    // list of themes    // list of themes
22    $themes = array(    $themes = array(
     'drawing_canvas',  
     'drawing_group',  
     'drawing_file',  
     'drawing_ellipse',  
     'drawing_rectangle',  
     'drawing_line',  
     'drawing_polyline',  
     'drawing_polygon',  
     'drawing_path',  
     'drawing_text',  
     'drawing_circle',  
23      'drawing',      'drawing',
24    );    );
25      // modules can easily add to this list by implementing hook_drawing_theme_alter().
26      // modules requiring advanced manipulation should use hook_theme_registry_alter().
27      drupal_alter('drawing_theme', $themes);
28    foreach ($themes as $theme) {    foreach ($themes as $theme) {
29      $drawing_themes[$theme] = $drawing;      $drawing_themes[$theme] = $drawing;
30    }    }
# Line 62  function drawing_admin() { Line 54  function drawing_admin() {
54    $form = array();    $form = array();
55    $form['drawing_type'] = array(    $form['drawing_type'] = array(
56      '#type' => 'radios',      '#type' => 'radios',
57      '#title' => t('Set toolkit'),      '#title' => t('Default toolkit'),
58      '#default_value' => variable_get('drawing_type', 'drawing_svg'),      '#default_value' => variable_get('drawing_type', 'drawing_svg'),
59      '#description' => t('Select which toolkit you want to enable on the site.'),      '#description' => t('Select the default toolkit to use on the site.'),
60      '#options' => drawing_get_all_methods(),      '#options' => drawing_get_all_methods(),
61    );    );
62    return system_settings_form($form);    return system_settings_form($form);
# Line 141  function drawing_retrieve_canvas($canvas Line 133  function drawing_retrieve_canvas($canvas
133   *   The themed output as rendered by drupal_render().   *   The themed output as rendered by drupal_render().
134   */   */
135  function drawing_render_canvas($canvas_id, &$canvas) {  function drawing_render_canvas($canvas_id, &$canvas) {
136      $canvas['#pre_render'][] = 'drawing_pre_render_canvas';
137    // Don't override #theme if someone already set it.    // Don't override #theme if someone already set it.
138    if (!isset($canvas['#theme'])) {    if (!isset($canvas['#theme'])) {
139      init_theme();      init_theme();
# Line 154  function drawing_render_canvas($canvas_i Line 147  function drawing_render_canvas($canvas_i
147  }  }
148    
149  /**  /**
150     * Recursively pre render the canvas elements.
151     *
152     * @param $canvas
153     *   The canvas to process
154     * @param $attributes
155     *   An array of attributes to pass down.
156     * @return
157     *   The updated canvas.
158     */
159    function drawing_pre_render_canvas($canvas) {
160      if (!isset($canvas['#method'])) {
161        $canvas['#method'] = drawing_get_method($canvas);
162      }
163      if ($canvas['#type']) {
164        $canvas['#type'] = 'drawing_'. $canvas['#type'];
165        $canvas['#handler'] = $canvas['#method'] .'_'. $canvas['#type'];
166      }
167      foreach (element_children($canvas) as $child) {
168        // pass down the #method
169        $canvas[$child]['#method'] = $canvas['#method'];
170        $canvas[$child] = drawing_pre_render_canvas($canvas[$child]);
171      }
172      // allow toolkit modules to add to this pre_render
173      if (function_exists($canvas['#handler'])) {
174        $canvas = $canvas['#handler']($canvas);
175      }
176      return $canvas;
177    }
178    
179    /**
180   * Prepares a structured canvas array by adding required elements,   * Prepares a structured canvas array by adding required elements,
181   * and executing any hook_drawing_canvas_alter functions.   * and executing any hook_drawing_canvas_alter functions.
182   *   *
# Line 164  function drawing_render_canvas($canvas_i Line 187  function drawing_render_canvas($canvas_i
187   *   An associative array containing the structure of the canvas.   *   An associative array containing the structure of the canvas.
188   */   */
189  function drawing_prepare_canvas($canvas_id, &$canvas) {  function drawing_prepare_canvas($canvas_id, &$canvas) {
   if ($canvas['#type'] == 'drawing_canvas') {  
     $canvas += _element_info('drawing_canvas');  
   }  
   elseif ($canvas['#type'] == 'drawing_file') {  
     $canvas += _element_info('drawing_file');  
   }  
190    foreach (module_implements('drawing_canvas_alter') as $module) {    foreach (module_implements('drawing_canvas_alter') as $module) {
191      $function = $module .'_drawing_canvas_alter';      $function = $module .'_drawing_canvas_alter';
192      $function($form_id, $form);      $function($canvas_id, $canvas);
193    }    }
194    return $canvas;    return $canvas;
195  }  }
196    
197  /**  /**
198   * Extract the defined method, defaults to 'drawing_svg'.   * Extract the defined method, defaults to 'drawing_svg'.
199     * Method can be explicitly set on the element, or the default config will be used.
200   */   */
201  function drawing_get_method() {  function drawing_get_method($element = NULL) {
202    static $drawing_method;    $drawing_method = $element['#method'] ? 'drawing_'. $element['#method'] : variable_get('drawing_method', 'drawing_svg');
   if (empty($drawing_method)) {  
     $drawing_method = variable_get('drawing_method', 'drawing_svg');  
   }  
203    return $drawing_method;    return $drawing_method;
204  }  }
205    
# Line 203  function drawing_get_all_methods() { Line 218  function drawing_get_all_methods() {
218  }  }
219    
220  /**  /**
  * Implementation of hook_elements().  
  */  
 function drawing_elements() {  
   $method = variable_get('drawing_method', 'drawing_svg');  
   $type['drawing_canvas'] = array(  
     '#width' => '200px',  
     '#height' => '200px',  
   );  
   $type['drawing_group'] = array(  
     '#width' => '200px',  
     '#height' => '200px',  
   );  
   $type['drawing_file'] = array(  
     '#height' => '200px',  
     '#width' => '200px',  
   );  
   return $type;  
 }  
   
 /**  
221   * Theme function.   * Theme function.
222   */   */
223  function theme_drawing($element) {  function theme_drawing($element) {
   $method = drawing_get_method();  
   return theme($method .'_'. $element['#type'], $element);  
 }  
   
 /*  
   To do:  
   
   chx says we should use '#process to tell the element that it's parent is svg.  
   quote: "add a #process to the element and propagate down the value.  
   for now I'm just applying svg  
   
   Another idea; use preprocess functions in hook_theme to deal with the 'method'?  
   
 */  
224      return theme($element['#handler'], $element);
225    }
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